جستجوی مقالات مرتبط با کلیدواژه « بار ذهنی کار » در نشریات گروه « پزشکی »

Healthcare providers have a high workload due to different work shifts, so they are always exposed to increasing sleep disorders, decreasing resilience, and thus decreasing job satisfaction. The purpose of this study was to investigate the relationship between mental workload, job burnout, job satisfaction, resilience, and sleep disorders among nurses in 2021. Research tools included demographic information questionnaire, NASA-TLX questionnaire, Maslach job burnout questionnaire (MBI), Minnesota job satisfaction questionnaire (MSQ), Petersburg sleep quality questionnaire, and resilience questionnaire (CD. RSC). The data were analyzed using SPSS version 25 and AMOS version 24 software. In this study, 171 women (62.4%) and 103 men (37.6%) were examined. Based on the fit indices (χ2/df=1.650, RMSEA=0.049, TLI=0.906, CFI=0.912), a good fit was observed between the model and the data. The results indicate that mental workload has a positive and significant effect on job burnout (P<0.001, β=0.202). Also, the negative effect of mental workload on resilience (P<0.001, β=0.334) and job satisfaction (P<0.001, β=0.356) have been accepted. The results confirm the positive effect of mental workload on sleep disorders (β=0.166, P<0.05). In addition, the results showed that job burnout has a positive effect on sleep disorders (β=0.153, P<0.05). It is suggested that with proper planning, training, and management of the factors investigated in this study, it is possible to play an important role in increasing the health of nurses and consequently improving their services to patients.

Nurses are under the influence of stressful factors and high work pressure, which increases nursing errors. One factor affecting nurses’ behavior and performance is the mental workload and cognitive failures. This research has investigated the mental workload and cognitive failures in two groups of nurses with and without unsafe behaviors during the outbreak of Covid-19.

This case-control study was conducted on 312 nurses during the severe period of the Covid-19 outbreak through the public hospitals in Guilan province. Sampling was performed by selecting 104 nurses in the case group (with unsafe behavior) and 208 nurses in the control group (with safe behavior) using the full count method. The data collection tool is a three-part questionnaire including demographic information, the mental workload (NASA-TLX) questionnaire, and the occupational cognitive failures questionnaire. The incidence of needle stick as a consequence of unsafe behavior was used as a criterion.

The results have shown that the workload in this research was 63.96±18.26, and the total score of cognitive failures was 59.1±13.9. There was no statistically significant difference between the two groups of nurses with and without unsafe behaviors (P>0.05). Still, there was a significant correlation between the total mental workload score in all areas and the total score of cognitive failures in the group of nurses with and without unsafe behaviors (p=0.001, r=0.225).

According to the results, the perceived mental workload is high for the nursing job. Despite of positive correlation between mental workload and cognitive failures, it can be mentioned that there are two-way interactions through their dimensions. Therefore, the nursing job requires adopting optimal engineering and management strategies to reduce the workload.

Job burnout is a multifactorial disorder that can occur more frequently in occupations with a high concentration and mental burden, such as faculty members. Quality of sleep is effective on tasks that require new information storage and high mental load. So this study aimed to evaluate the correlation between job mental load and sleep quality with occupational burnout in non-clinical faculty members of Kashan University of Medical Sciences, 2018.

This descriptive-correlational study was performed on 102 non-clinical faculty members of Kashan University of Medical Sciences in 2019 and census. Data collection was done using Maslach questionnaires, NASA TLX and Pittsburgh. Statistical analysis was performed using Chi-square, Fisher's exact test, independent t-test and Pearson correlation coefficient.

About 90 percent of faculty members had high mental demand. There was no significant correlation between job burnout with mental job load and sleep quality. But there was a significant correlation between mental job load and sleep quality (R= -0/661, P<0.001). Also, job mental load was higher in faculty members of medical school and emotional exhaustion in faculty members of health faculty than other faculties (P<0.05).

Considering the high level of mental load of teachers and its negative impact on sleep quality, it is recommended that interventional programs aimed at creating proper occupational conditions, strengthening their job ability and teaching the principles of sleep health to reduce mental load of  job and improving the sleep quality of teachers, implemented.

Mental workload is one of the affecting factors in efficiency and performance of therapist in the workplace. Neuro feedback is a new modality for improvement of healthy person's daily activity and its quality. The aim of this study is evaluation of neurofeedback effects on mental work load in occupational therapists.
This study has experimental design with pre-post test, experimental- fake group and was performed on 22 occupational therapists. Subjects were divided into two real neuro feedback and mock neuro feedback (placebo) groups. Both groups were treated with neuro feedback for 12 sessions. NASA (task load index) was used to assess both groups before and after the treatment. Effect size and improvement percentage were used to analyze the collected data.
The results of the improvement percentage showed that mental need and hopelessness subscales in real neuro feedback have more than 15% difference in comparison with mock neuro feedback that indicate clinical significant. Effect size in the real neuro feedback on mental need subscale was great and in time need and hopelessness subscales were average. Effect size in mock neuro feedback on total subscales was low.
The effectiveness of real neuro feedback was not due to the changes in the placebo. It can be as a complementary decreasing in the mental work load.

Mental workload is a set of factors that affect on the mental processes of information, providing decision making and individual reactions in the workplace. This study aimed to assess the mental work load and effective factors on it among the emergency medical personnel during the rescue missions, and transportation of the injured persons. This cross-sectional study was conducted on 96 emergency medical personnel in Isfahan in 2013. For data collection, a standard questionnaire was used. The NASA TLX is an assessment tool that rates perceived workload on 6 different subscales: Mental demand, Physical demand and temporal demand, Frustration, effort, and performance. Score of mental work load was determined by NASA-TLX (V.2) software. Using SPSS 18 through Kolmogorov–Smirnov (K-S) test, independent t test, spearman and multivariate linear regression were analyzed. Average scores on the mental workload during the complex mission emergency medical personnel according to the weight and rating of each of sextet scales, (81.25±4.81) were calculated. The highest score sextet scales of NASA-TLX mental workload was for mental demands (90.10±8.41) and the lowest score related to the disappointment (55.20±8.01) of emergency medical personnel during the mission emergency medical personnel. Results showed that the emergency medical personnel at the mission complex emergencies exposed to high mental load that the main reasons were caused of the need to high speed action, make important decisions, and fast transportation of injured persons to the medical centers. This mental workload can lead to increase the error in the emergency medical personal, therefore, ergonomic and psychosocial interventions are suggested to reduce the human errors, stress and stress and fatigue among the emergency medical personnel job performance.

Background and Considering the working problems of nursing staff who are concerned with human life in emergences is of great importance in emergency departments. Mental workload affects individual’s health and performance. Therefore, this study aimed at investigating the mental workload and the factors that influence it among the nursing staff in emergency centers. A descriptive analytical study was conducted in nursing staff in emergency centers in Isfahan, Iran, 2015. Data was collected by census among 230 nurses in seven emergency departments using NASA-TLX scale to assess the nurses’ workload. Data was analyzed in SPSS V.16 applying t-test, one way ANOVA and Pierson correlation confession analytical tests. Total mental workload was estimated to be 66.44±11.92. The highest and lowest scores were observed for effort (80.00±19.43) and frustration (34.47±26.08), respectively. There were no significant associations between age, experience, sex and shift work with mental workload (P>0.05). But significant relationship was seen between type of contract and mental workload. Mental workload among emergency nursing staff was found to be high, therefore, appropriate actions are required to reduce the mental workload and mental pressure.

Nurses are people who do important works in hospitals. Studies have shown that the strain level among nurses has inverse relation to the quality of care provided by them. One of the factors that can affect the nurse''s behavior and performance in the workplace is mental workload. The aim of this study was to assess the mental workload and its affected factors among the nursing staff. This descriptive study was conducted among the nursing staff of Kashan educating hospitals during 2014. Sampling was performed by census among 480 nurses at six Treatment center. Demographic information and mental workload data were gathered by using demographic information questionnaire and NASA task load index، respectively. The data were analyzed by using t-test، one way ANOVA and Pierson correlation confession analytical tests. Effort score (78. 61±18. 15) and frustration score (47. 82±30. 91) obtained the highest and lowest rates. Total mental workload was estimated 69. 54±15. 71. There was significant relationship between mental workload factors and age، shift working and type of contract. But، there was no significant relationship between mental workload and work experience work duration and working unit. The mental workload among the nursing staff is high. According to the relationship between mental workload aspects، performing the corrective actions in order to reduce each aspects can affect on mental workload perfectly.

Nurses are the largest service providers in the health system, so they should have desirable quality of life to provide favorable care for the patients. On the other hand, the nurse's workload is high. The study aims to investigate the correlation between mental workload and quality of life in nurses. This descriptive, analytical and cross-sectional study was performed on 120 nurses of medical sciences of Urmia University. For assessment of mental workload and quality of life NASA- Task Load Index (TLX) and quality of life questionnaire (SF36) were used respectively. Data were analyzed using descriptive statistics and Pearson correlation analysis. Reault: Result showed mental demand was maximum (86.16± 21.24) and physical need was minimum (55/83± 22.16) compared to other mental workload aspects. Quality of life index in the activity limitation due to emotional problems was in worst situation (50.75±37.91) and in the physical performance was in best situation (73.91± 23.18) compared to other aspects of quality of life dimensions. Between mean score of mental workload with activity limitation due to emotional problems, social performance and general health were statistically significant negative correlation (P<0.05). High mental workloads deteriorate quality of life of nurses and subsequently decrease quality of their service to patients. Therefore, measures necessary to reduce the workload among nurses.

One of the major factors affecting personnel is workload that puts many people at risk and may affect the quality and quantity of services. The object of this study was assessment of mental workload in teachers of Hashtrud city using NASA- TLX mental work load index. This was a descriptive study, which was conducted among 137 teachers of Hashtrud city in year 2013. In this study we used NASA-Task load indexes (TLX) for assessment of mental workload of teachers. Reliability and validity of this index were verified by Ghorbani (Cronbach’s alpha = 0.83). Data were analyzed using SPSS -16 software. Result showed thinking and mental workload were maximum (81.04 ± 20.49) and frustration score was minimum (47.84 ± 35.29). Mean mental workload among the different age group, different experience and educational degree were not significant different (P>0.05). Mean mental work load among the teacher with two and single job were significantly different (P<0.05). Mean mental workload among the teacher with two and single job were significantly different (P<0.05). Mean mental workload among the teacher with different work hours per week was significantly different (P<0.05). ‍ Mean mental workload score was higher among teachers, which can negatively impact the quality and quantity of education by teachers. Thus, implementation of effective programs to mitigate work hours and reduce the mental load in order to enhance teacher’s performance is suggested.

One of the factors affecting the behavior and performance of nurses in the workplace is mental work load. This study aimed to assess the mental work load and risk factors on intensive care unit nurses. This descriptive cross-sectional study was performed on 163 nursing employed in hospitals in Isfahan, Iran. For collecting data, National Aeronautics and Space Administration Task Load Index (NASA-TLX), measuring mental load specialized questionnaire was used. The data collected from the questionnaire was entered the NASA-TLX software and the final score of mental work load was determined. Spearman correlation test showed no significant relationship between the variables of subjective and mental work load. But, correlation was significant between the number of cared patients by a nurse on each shift and scores of mental work load in critical care unit nursing (P = 0.004). NASA-TLX showed that the lowest score of six scales was of temporal demand (63.56) and the highest scores was for mental demand (83.50). Based on our findings, the mental work load was high in nursing critical care unit. Therefore, using intervention strategies to reduce mental work load in this group seems to be necessary.